The problem is never how to get new, innovative thoughts into your mind, but how to get old ones out. Every mind is a room packed with archaic furniture. You must get the old furniture of what you know, think, and believe out before anything new can get in. Make an empty space in any corner of your mind, and creativity will instantly fill it.

Dee W. Hock (1929-2022) American businessman

In M. Mitchell Waldrop, “Dee Hock on Management,” Fast Company (Oct/Nov 1996)
    (Source)